Abstract

We provide the first karyotype description of the agro-predatory ant species Megalomyrmex incisus Smith, 1947 (Myrmicinae, Formicidae), and chromosome counts of its host Mycetophylax conformis (Mayr, 1884) (Myrmicinae, Formicidae) from geographically distinct populations. Colonies of both species were sampled from coastal areas of Ilhéus, Bahia, Brazil, and transferred to the laboratory. Metaphase spreads were prepared from the cerebral ganglia of defecated larvae. The slides were examined and pictures of the best metaphases were taken. The chromosome number for M. incisus was 2n=50 and n=25. The karyotype of this species consists of 20 metacentric and 5 submetacentric pairs. Thus, the karyotype formula of the diploid set was 2K=40M + 10SM and a fundamental number FN=100. The host species M. conformis has 2n=30 and the karyotype consisting of 11 metacentric and 4 submetacentric pairs. The karyotype formula was 2K=22M + 8SM, and a fundamental number FN=60. M. incisus showed a slightly higher chromosome number, placed at the marginal range of the known distribution of haploid karyotypes of the Myrmicinae. The chromosome number and chromosomal morphology of M. conformis corresponded to those of previously studied populations, suggesting its karyotype stability.

Addeddate

2025-03-16 15:22:27

Bhl_virtual_titleid

210879

Bhl_virtual_volume

v.11:no.1 (2017)

Call number

10_3897_CompCytogen_v11i1_10842

Call-number

10_3897_CompCytogen_v11i1_10842

Foldoutcount

0

Genre

article

Identifier

cytogeneticdata11card

Identifier-ark

ark:/13960/s2wvvz4718z

Identifier-bib

10_3897_CompCytogen_v11i1_10842

Identifier-doi

10.3897/CompCytogen.v11i1.10842

Issue

1

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

74

Page_number_module_version

1.0.5

Page_range

45-53

Pages

9

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

Comparative Cytogenetics 11(1)

Year

2017

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